3428 results about "Measurement device" patented technology

Disclosed in the present invention are a wind field correction method and system applied to a single-station remote sensing device. The method comprises the following specific steps: S1, acquiring wind field data by means of a data information acquisition apparatus, and obtaining radial wind speed information of a current acquisition point by means of a data processing module; S2, on the basis of the hypothesis of an uniform wind field, using a classical wind speed reconstruction algorithm for inversion to obtain a three-dimensional wind speed vector of the acquisition point; S3, establishing an error model; and S4, on the basis of an error factor β calculated by means of the error model, performing data correction on the three-dimensional wind speed vector of the acquisition point obtained by means of inversion in S2. Compared with the prior art, the present invention provides a high-precision correction method, which can be operated on low-end hardware, and can also be directly installed and operated on hardware of a measurement device, so that measurement results can be corrected in real time, no additional complexity can be brought to users, and costs are reduced; and the present invention is suitable for solving complex system problems when accurate boundary conditions cannot be obtained.

There is provided an inside-diameter measuring unit capable of automating inside-diameter measurement and a control method for automatic inside-diameter measurement. An inside-diameter measuring part is supported by a support frame part via a floating joint part. The floating joint part includes a rotation-allowing mechanism part and a translation-allowing mechanism part. A measuring head part of the inside-diameter measuring part is inserted into a hole by a robot arm part. The inside-diameter measuring part adjusts its position and posture autonomously by the reaction force when a contact point pushes against the inner wall of the hole to align the axis of the inside-diameter measuring part with the axis of the hole. An electric inside-diameter measuring unit can automatically measure the inside diameter of a hole.

A calibration unit comprises a first port which is arranged for being connected to a measurement device; a calibration module comprising at least three different calibration standards for calibrating the measurement device; and a switching module configured to connect the first port with one of the at least three different calibration standards of the calibration module. A daisy chain port is arranged for being connected to a further calibration unit, to an external power meter, or to a device-under-test, DUT. The first port is connectable to the daisy chain port. An internal power meter is arranged within a housing of the calibration unit. The first port is connectable to the internal power meter; or an internal impedance tuner. The first port is connectable to the internal impedance tuner.

The invention discloses a device and method for measuring the abrasion amount of a spray needle of an impulse turbine, and the device comprises a fixed platform which is used for placing the spray needle to be measured, and the spray needle to be measured is provided with a plurality of points to be measured; the inner and outer slide rails are arranged at the top of the fixed platform, are positioned on the outer side of the to-be-measured spray needle and axially coincide with the to-be-measured spray needle; the rotating platform is in sliding connection with the inner and outer sliding rails and can rotate around the to-be-measured spray needle; the telescopic platform is arranged at the top of the rotating platform, and the end, away from the rotating platform, of the telescopic platform is connected with an inclined platform; the distance measuring probe system is detachably connected to the inclined platform, and the measuring end of the distance measuring probe system faces the to-be-measured spray needle; the measuring device is combined with a multi-degree-of-freedom adjusting mechanism to realize accurate positioning and vertical alignment of the probe, then the probe system is used for reading the displacement and deducting the thickness of the sleeve to obtain the real abrasion depth, non-destructive high-precision abrasion amount detection of any point of a complex curved surface can be realized, and the measuring device is suitable for a hydropower station overhaul site.

The invention discloses a measuring method, a measuring device and a measuring system for a pole piece. The measuring device acquires a first image of a to-be-measured pole piece acquired by an image acquisition assembly; identifying a measurement object of the to-be-measured pole piece in the first image to obtain a measurement object identification result; wherein the measurement object recognition result comprises at least two feature points on the measurement object; identifying a scale on a passing roller in the first image to obtain a scale identification result; wherein the scaleplate is arranged along the peripheral surface of the passing roller in a surrounding manner in the circumferential direction; the scaleplate identification result comprises at least one of scale marks, flag bits and positions of the scaleplate; the flag bit is used for indicating a preset position of the scale surrounding the peripheral surface of the passing roller; the position is the side edge position of the scale in the axial direction of the passing roller; and determining a size measurement result of the measurement object based on the measurement object recognition result and the scale recognition result. Based on the scheme, the accuracy and efficiency of pole piece measurement can be effectively improved.

A centrifugal separation system includes a centrifugal separator, a liquid feed mixture conduit, a light phase conduit, a heavy phase conduit, and a flow control system. The flow control system includes a controller, a flow control valve arranged in a light phase conduit, a liquid feed mixture measuring device, and at a light phase measuring device and / or a heavy phase measuring device. The controller is configured to control the flow control valve based on measurements from the liquid feed mixture measuring device and measurements from the light phase measuring device and / or the heavy phase measuring device.

The invention discloses a space magnetic field automatic measurement control system and method, and relates to the technical field of magnetic field measurement. The system comprises a guide rail erected on the inner side of the annular coil and arranged in the axial direction of the annular coil; the measuring device comprises an omnibearing measuring assembly and a supporting part used for supporting the omnibearing measuring assembly. One part of the supporting part is assembled in the guide rail, and the omnibearing measurement assembly comprises a magnetic measurement sensor, a radial driving module, an angular driving module and an axial driving module and is used for measuring magnetic field data of any radial position, any angular direction and any axial position in the annular coil; and the control device is used for respectively controlling the radial driving module, the angular driving module and the axial driving module so as to drive the magnetic measurement sensor to measure magnetic field data at a specified position. According to the invention, precise positioning of a three-dimensional space magnetic field, space omnibearing measurement and space omnibearing automatic control are realized.

The utility model relates to the technical field of housing construction engineering, and discloses a housing construction engineering positioning and measuring device which comprises a supporting table, a supporting rod is movably connected in the supporting table in a penetrating mode, a measuring instrument is fixedly connected to the upper end of the supporting rod, and a supporting mechanism is arranged on the lower surface of the supporting table. A rack is fixedly connected to the left side surface of the supporting rod, and an adjusting mechanism is arranged on the upper surface of the supporting table and located on the left side of the supporting rod. According to the utility model, in the aspect of height adjustment, through the linkage design of the supporting rod and the rack and the combination of a mechanical locking mechanism of the gear, the ratchet wheel and the pawl, stepless precise adjustment of the measuring instrument is realized, and the motor fault risk and power consumption are avoided; in addition, the rotating rod can be locked through the positioning bolt after adjustment is completed, accidental displacement of the measuring instrument is prevented, and the reliability of the device is further improved. According to the design, through a pure mechanical structure, the height adjusting process is simplified, the maintenance cost is reduced, and the device is particularly suitable for engineering scenes in a power-free environment.

The invention relates to the technical field of trajectory measurement, discloses an underwater riprap particle motion trajectory measurement device and method, and aims to realize high-precision response tracking of stress and motion trajectory of riprap particles around a foundation under dynamic water scouring based on an underwater positioning unit sensing array and a high-frequency sampling particle motion and attitude detection technology. The technical problem that the motion characteristics of a single riprap particle cannot be observed in previous riprap protection research is solved. Through combined measurement of acceleration and angular velocity data collected by the inertial measurement unit and absolute position measured by the radio frequency unit, the three-dimensional motion condition, track and attitude process of a unit space as well as two-dimensional displacement images of a riprap surface and a vertical flow section are accurately reconstructed; and a centimeter-level-precision visual data support and a low-cost research means are provided for foundation scouring and coastal slope protection and riprap protection research, so that the engineering cost is saved.

The invention belongs to the field of near-inertia internal wave modeling, and particularly relates to a near-inertia internal wave modeling method based on a reverse echo observation array, which comprises the following steps: arranging a reverse echo measurement device array in an observation area, and acquiring echo signals from the seabed to the sea surface; performing data cleaning and band-pass filtering on the signals, and extracting near-inertia internal wave signals; calculating the depth and the relative vorticity of a mixed layer by combining historical temperature-salinity data; calculating a wind input energy flux by using the wind stress data; calculating a net level energy flux by adopting a boundary integration method; judging whether the boundary energy flux influence is smaller than a threshold value or not, and if not, adjusting array layout; and finally establishing a multivariable linear model containing wind energy input, mixed layer depth, relative vorticity and energy flux. According to the method, the temporal-spatial resolution and prediction precision of near-inertia internal wave modeling are effectively improved, the problems that in a traditional method, the boundary effect is remarkable, and multi-factor comprehensive modeling is insufficient are solved, and the method is suitable for long-term efficient monitoring of a large-range marine environment.

The invention provides an ore grinding efficiency optimization method and system based on ore quantity measurement. Comprising the following steps of S1, real-time ore quantity metering and data collection, wherein an ore quantity metering device is installed at an ore feeding port of the ore grinding process, and ore quantity data entering ore grinding equipment are collected in real time; meanwhile, a plurality of sensors are arranged in the ore grinding equipment and related processes, and ore property data, ore grinding equipment operation parameter data and ore grinding product quality data are collected. According to the ore grinding efficiency optimization method and system based on ore quantity metering, data are collected in real time through the high-precision ore quantity metering device and multiple sensors, accurate sensing of ore quantity fluctuation and ore property changes is achieved, the problem that parameter adjustment is not in time due to manual judgment delay or errors is solved, and the ore grinding efficiency optimization efficiency is improved. And the real-time performance and accuracy of the ore grinding process are improved.

A method of monitoring a condition prevailing inside a piping system with respect to an impairment due to accretion, abrasion or corrosion caused by fluid(s) flowing through the piping system is disclosed, comprising the steps of: installing at least two measurement devices susceptible to an impairment and configured to measure variables indicative of the impairment; wherein the measured variables include at least two variables exhibiting a different dependency on the impairment; continuously recording data including time series of measured values of the variables measured; based on training data included in the data determining a dynamic reference behavior of the variables corresponding to time dependent distributions of values of the variables to be expected of the measured values when the measurement devices are unimpaired; repeatedly determining a deviation between a monitored behavior of the measured values of the variables and the reference behavior.

The invention relates to the technical field of profound hypothermia metering, and provides a low-temperature flow measuring device, an error calibration method and a measuring method.The device comprises a fluid source used for providing low-temperature fluid; an inlet of the measuring pipeline is connected with a fluid source; the measuring pipeline is connected with a detected flowmeter; the standard receiving tank is connected with the outlet of the measuring pipeline, and the standard receiving tank and the outlet of the measuring pipeline have two states of connection and disconnection; the static weighing module is used for statically weighing the standard receiving tank in a static measurement mode; and the dynamic weighing module is used for enabling the standard receiving tank to be separated from the static weighing module in the dynamic measurement mode and dynamically weighing the standard receiving tank. Through the arrangement, the final dynamic measurement result can ensure the traceability to the quality and the accuracy of the time reference, and has the advantages of continuous monitoring, rich data and efficient operation of the dynamic method, so that a high-performance dynamic flow measurement reference with both the accuracy of the static method and the continuity of the dynamic method is constructed.

The invention provides a device and method for measuring the flow velocity and flow of gas in a pipeline, and particularly relates to the technical field of measuring instruments, and the device comprises a flow field optimization assembly, a flow velocity sensing assembly and a signal processing assembly. The flow field optimization assembly comprises a plurality of air duct partition plates and straight pipe sections, and the gas conveying pipeline is divided into a plurality of independent divided air ducts; the flow velocity sensing assembly comprises a rectification assembly and a pressure sensing assembly, the rectification assembly comprises a pore plate and / or a grid, and the pressure sensing assembly comprises a plurality of uniformly distributed pressure sensing elements; the signal processing assembly comprises a differential pressure sensing transmitter, a static pressure sensing transmitter, a temperature sensing transmitter, an atmospheric pressure sensing transmitter and a data processing module. The pressure sensing element detects differential pressure signals, the differential pressure sensing transmitter converts the signals, the data processing module calculates the average flow velocity and flow of gas based on the signals and measurement data, and the measurement precision and accuracy are improved.

The invention relates to the technical field of laser measuring instruments, and discloses a device for measuring roadway roof separation by laser, which comprises a roadway roof, a laser probe, a first threaded pipe, a second threaded pipe and a mounting mechanism, and is characterized in that the laser probe is mounted on the first threaded pipe and is connected with a cable; the mounting mechanism is used for mounting the second threaded pipe on the first threaded pipe; the mounting mechanism comprises a base arranged on the roadway top plate, a rotating mechanism and a lifting mechanism are arranged on the base, and the lifting mechanism is used for feeding the laser probe, the first threaded pipe and the second threaded pipe into drill holes formed in the roadway top plate. The device for laser measurement of roadway roof separation overcomes the defects that in the prior art, equipment is large in occupied area and depends on the stability of a bottom plate, and the measurement precision is prone to being interfered, and the roof separation measurement device is more efficient, more accurate and more suitable for the underground complex environment.

The invention relates to the technical field of bearing measurement, and discloses a multifunctional measuring instrument for comprehensive precision of a rolling bearing. The driving device is mounted on the working platform and comprises a load block capable of axially moving and a motor assembly for driving the load block to rotate; the measuring device comprises a high-precision inductance measuring head for detecting the runout of the bearing to be measured and a pressure sensor for monitoring an axial load; the fixing device is a replaceable mandrel base and is used for supporting an inner ring or an outer ring of the bearing to be detected; wherein the driving device applies an axial load to an inner ring or an outer ring of a to-be-measured bearing through the load block and drives the to-be-measured bearing to rotate, the measuring device synchronously collects bounce and load data of the to-be-measured bearing, the brushless motor and the load block are connected through the magnetic coupling, and the centering error of the mechanical coupling is eliminated. Meanwhile, motor vibration is prevented from being transmitted to the to-be-tested bearing, the pushing force air floating shaft sleeve actively counteracts the magnetic attraction force, and the stability of the load applied to the to-be-tested bearing is remarkably improved.

The invention provides a railway bridge line beam eccentricity measuring method, which at least comprises the following steps of: acquiring position information of a bridge guardrail by adopting a radar module, and adjusting the height position of a laser ranging module according to the position information, so that the laser ranging module can detect the bridge guardrail for ranging; the laser ranging module is adopted to measure the distances between the first steel rail and the bridge guardrails on the two sides of the first steel rail at the same time, and the eccentric distance is calculated according to the distance parameters measured by the laser ranging module and the track gauge of the track. The invention provides a device for measuring the eccentricity of the railway bridge line beam. The measuring device is applied to the method for measuring the eccentricity of the railway bridge line beam. The method has the beneficial effect that the eccentric distance along the track can be automatically and continuously measured.

The invention relates to the technical field of drilling attitude measurement, in particular to a roadway drilling attitude measuring device and a using method. The provided roadway drilling attitude measuring device comprises a shell, the shell comprises a first shell and a second shell which are connected, the first shell comprises a transparent shell, and the second shell comprises a metal shell; the conical mirror is arranged in the first shell; the camera is arranged in the second shell, and the camera and the conical mirror are oppositely arranged; the data storage and transmission unit is arranged in the second shell, and the data storage and transmission unit is electrically connected with the camera; the measuring unit is arranged in the second shell, and the measuring unit is electrically connected with the data storage and transmission unit. According to the method and the device, the problem that the current drilling attitude measurement is relatively large in error or cannot meet the requirements of rapid feedback and accurate application of data can be solved, and the drilling quality and attitude can be measured in real time and at high precision.

The invention discloses a boiler expansion indication three-dimensional remote transmission measurement method, system and equipment and a medium, and belongs to the technical field of boiler monitoring, and the method comprises the steps: obtaining the real-time distance data of a to-be-measured part of a boiler in a first direction, a second direction and a third direction through a measurement device disposed on the to-be-measured part of the boiler; according to the real-time distance data and preset reference distance data when the boiler does not expand, the expansion amount of the boiler component to be measured in the first direction, the second direction and the third direction is determined; converting the swelling amounts in the first direction, the second direction and the third direction into standard signals; and sending the standard signal to a monitoring system for display. According to the invention, high-precision three-dimensional measurement, automatic data remote transmission and intelligent analysis and early warning based on data are realized, so that the measurement precision and reliability are improved, automatic monitoring and graded early warning are realized, and intelligent diagnosis can be carried out to distinguish real abnormity and measurement interference.

The invention discloses a configuration acquisition method and system for realizing a maximum violation five-setting CHSH measurement device, and relates to the technical field of quantum information processing, and the method comprises the steps: S1, obtaining the probability amplitude of the pure state of a pair of two-dimensional non-maximum entangled particle A and particle B, and calculating the concurrency; s2, constructing an incidence matrix based on the concurrency, and mapping the measurement vector of the particle B from the Bloch spherical surface to the ellipsoid surface by using the incidence matrix; s3, taking five points on the same plane on the ellipsoid as vertexes of a five-pointed star, wherein a perimeter formula of the five-pointed star is equivalent to a correlation function maximum value formula; s4, traversing vertex positions of the five-pointed star to obtain a maximum perimeter value; s5, obtaining the measurement vector of the particle B and the measurement vector of the particle A to obtain the optimal measurement configuration; and S6, configuring a quantum measurement device to measure the particles A and B. According to the method, the problem of setting the maximum value of the CHSH correlation function is converted into the problem of solving the maximum value of the perimeter of the ellipsoid inscribed five-pointed star, and the optimal measurement scheme is obtained through simple numerical fitting.

The utility model relates to an electrical system for a submarine sediment acoustic in-situ measurement device, which belongs to the technical field of submarine measurement electrical control and comprises a shipborne part and an underwater part which are connected through a photoelectric composite cable. The shipborne part is used for controlling the work of the underwater part; wherein the underwater part comprises a plurality of modular units which are connected through standardized interfaces, and the modular units comprise a main control unit, an acoustic measurement unit, a power amplifier unit, a transducer unit, a hydrophone unit and a power supply unit. According to the electrical system for the acoustic in-situ measurement device for the submarine sediments, through modular design, the adaptability and universality of the electrical system are improved; and moreover, a worker can add corresponding units or modules according to measurement requirements, so that the expandability of the system is improved, and different measurement scenes and requirements are better met.

The invention provides a measuring device for machining, and relates to the technical field of machining measurement, the measuring device comprises a measuring mounting piece, and a floating supporting piece is mounted on the measuring mounting piece; a positioning device is mounted on the measurement mounting piece; the floating supporting piece is used for checking the original deformation of the workpiece; a floating safety piece is mounted on the measurement mounting piece; the floating safety piece is used for keeping the workpiece supporting stress uniform; a delay positioning part is mounted on the measurement mounting part; the effectiveness of a row of floating supporting pieces can be detected by adopting the floating safety pieces, and interference caused when the elastic floating supporting pieces are partially and completely pressed down or are not pressed down is avoided; the problem that an existing measuring device for machining is inconvenient to support and position after automatically controlling uniform stress distribution is solved.

The invention provides an erosion gully erosion volume measuring device, and relates to the technical field of water and soil loss monitoring equipment.The erosion gully erosion volume measuring device comprises a three-dimensional laser scanner, an installation flange is fixedly installed at the lower end of the three-dimensional laser scanner, a controller and an installation disc are fixedly installed at the upper end of the three-dimensional laser scanner, and first inner grooves are symmetrically formed in the side wall of the installation disc; a rotating drum is rotatably mounted in the two first inner grooves, circular grooves are uniformly formed in the upper end of the rotating drum at equal intervals, a first spring is fixedly mounted in each circular groove, a clamping block is fixedly mounted at the upper end of each first spring, and each clamping block is slidably mounted in the corresponding circular groove; a first window, a second window, a third window and a fourth window are evenly installed in the rotating drum at equal intervals, the four types of windows cover the typical environment of erosion gully measurement by 90% or above, the laser light transmittance in any scene is ensured, point cloud noise, data cavities or precision deviation caused by environment interference are reduced from the source, and the measurement accuracy is improved. And the reliability of measurement results is ensured.

The utility model relates to the technical field of pile foundation construction, in particular to an ultra-long pile foundation concrete elevation measuring device which comprises a measuring box, a measuring mechanism is arranged in the measuring box, a controller is installed on the outer wall of the measuring box, and a storage battery is installed in the measuring box and above the measuring mechanism. The measuring mechanism comprises a driving shaft rotationally connected to the interior of the measuring box, connecting plates are fixedly connected to the top, the bottom and the two sides of the driving shaft, a winding sleeve is slidably connected to the outer wall of each connecting plate, and a traction rope is wound on the outer wall of each winding sleeve and in the measuring box; according to the ultra-long pile foundation concrete elevation measuring device, the measuring mechanism in the device is used for measuring the concrete elevation, and the problems that an existing concrete elevation measuring device cannot accurately judge the elevation of a concrete layer, and the measuring accuracy is high are solved. And the accuracy of measured data is low.

The invention discloses a non-invasive ultrasonic gas concentration and flow synchronous measurement device, and relates to the field of gas measurement equipment. The clamp body clamps and wraps the gas pipeline, and the clamp body is provided with a mounting space; the transducer assembly comprises a pair of ultrasonic transducers, each ultrasonic transducer comprises a sound wave generating surface, and a non-zero included angle is formed between the sound wave generating surface and the extending direction of the gas pipeline; the flexible ultrasonic transmission assembly comprises an acoustic coupling piece and an acoustic wave absorbing piece, the acoustic coupling piece is used for constructing a sound wave conduction path from the ultrasonic transducer to the gas pipeline in the first direction, and the acoustic wave absorbing piece is used for attenuating structural waves propagating in the second direction along the outer wall of the gas pipeline. By adopting the scheme, high-efficiency and high-precision gas concentration and flow measurement is realized on the premise of non-intrusive gas measurement equipment.

A method of determining a form measurement for a curved feature of an artefact. The method includes a positioning apparatus relatively moving the artefact and a measurement device relative along a curved path in a first direction, to obtain a first set of data points along the surface of the curved feature, and the positioning apparatus relatively moving the artefact and the measurement device other along a curved path in a second direction, opposite to the first direction, to obtain a second set of data points along the surface of the curved feature. The method further includes using the first and second sets of data points to determine a form measurement for the artefact.

The invention discloses a lifting type underwater water quality measuring device, which belongs to the technical field of water quality monitoring equipment and comprises a floating mechanism, a cleaning mechanism, a winding machine, a lifting frame body, an isolation bin mechanism and a measuring integrated cylinder. The floating mechanism bears the whole floating on the water surface and can be dragged to move along with the ship to achieve rapid transition. The winding machine controls the lifting frame body through the traction rope to drive the measurement integration cylinder to move vertically, and continuous collection of different depth parameters of the water body is achieved. The isolation bin mechanism is a bin body with a downward opening formed by closing two half shells, and a measurement integration cylinder is accommodated in the isolation bin mechanism; a water-gas dual-purpose pump of the cleaning mechanism injects gas into the closed cabin body to empty accumulated water so as to expose the probe, and then sprays water flow to wash attachments on the surface of the probe. The device solves the problems of poor mobility, low profile measurement efficiency and data misalignment caused by probe biological pollution of the existing equipment, and has the capabilities of flexible transition, efficient layered monitoring and reliable in-situ self-cleaning.

The invention relates to a Coriolis flow measuring device (1) for determining a mass flow rate, a medium density and / or a medium viscosity of a fluid measurement medium, in particular a liquid, in a process line, comprising:-a measuring system (10), the measuring system (10) having a measuring line (11) for conveying the measurement medium, the measuring line (11) being arranged in the process line (11); the measuring system (10) has at least one measuring tube (12); -a calibration system (20), the calibration system (20) having a calibration line (21), separate from the measuring line (11), for conveying a calibration medium, the calibration system (20) comprising at least one calibration tube (22); -a (combined) exciter system (30) for exciting mechanical oscillations of both the measurement system and the calibration system; -a (combined) sensor system (40) for detecting mechanical oscillations of both the measurement system and the calibration system, in which the exciter system (30) and the sensor system (40) are each connected, in particular in a detachable manner, to the measurement system (10) and to the calibration system (20), in particular to the measurement system (10) and the calibration system (20). The exciter system (30) and the sensor system (40) are preferably detachably connected to the measurement system (10) and the calibration system (20); and measurement and calibration electronics (50), where the measurement and calibration electronics (50) are electrically connected to both the exciter system (30) and the sensor system (40) and are configured to oscillate both the measurement tube (12) and the calibration tube (22) by means of the exciter system (30) and to determine oscillations of the measurement tube (12) and the calibration tube (22) by means of the sensor system (40), where the measurement and calibration electronics (50) are electrically connected to both the exciter system (30) and the sensor system (40). The measurement and calibration electronics (50) are configured to determine at least one calibration variable of an integral system formed by the measurement system (10) and the calibration system (20), based on oscillations of both the measurement system (10) and the calibration system (20) conveying the calibration medium, as determined by the sensor system (40), and wherein the measurement system (10) and the calibration system (20) are coupled to the sensor system (40), the measurement and calibration electronics (50) are configured to determine a mass flow rate, a medium density and / or a medium viscosity of a measurement medium conveyed in the measurement system (10) as a function of at least one calibration variable and / or a variable derived therefrom.

According to the wafer surface type measurement device and measurement method provided by the invention, the first interferometer obtains the first cavity interference image of the measurement cavity in the cavity state, the first cavity interference image determines the first cavity detection result, the first interferometer and the second interferometer emit light at the same time, and the first cavity detection result is determined by the second cavity interference image. The first interferometer obtains a first interference image in a state in which the first sample is fixed in the measuring cavity, determines a first interference detection result according to the first interference image, and adjusts the position of the first sample in the measuring cavity; when the first interference detection result is detected, a cavity ring area of the first interference detection result is made to be close to a corresponding area of the first cavity detection result, at the moment, the position of the first sample in the measuring cavity is marked as a standard station, and surface type measurement of the first sample is executed at the standard station. According to the method and the device, the crosstalk influence during cavity measurement is eliminated, and the standard station for wafer measurement is determined on the basis, so that the crosstalk influence on the circuit is effectively avoided when wafer measurement is carried out at the standard station, and the measurement precision is improved.

The utility model relates to the technical field of rare earth resource exploration, in particular to a comprehensive measuring device for hydraulic parameters and various electric responses, which comprises a constant-pressure water supply component, an adjusting valve, a measuring soil column container, a collecting and measuring component, a pressure sensor, a recorder and an electric response measuring instrument. The soil column measuring container comprises a container main body, a microporous baffle plate, two current electrodes and two measuring electrodes, the water inlet end and the water outlet end of the constant-pressure water supply assembly are respectively communicated with the container main body through pipelines, and the storage and collection assembly is arranged on the pipeline between the water outlet and the constant-pressure water supply assembly; a sample cavity between the two microporous baffles in the container main body is used for filling a sample; the adjusting valve is used for adjusting the flow; the pressure sensor, the collecting and measuring assembly, the measuring electrode and the current electrode are used for measuring hydraulic parameters and flowing electric response. According to the utility model, the hydraulic parameters and various electric responses of the sample can be accurately measured, and the electric responses under different hydraulic conditions can be measured.